pam_exec.so [debug] [expose_authtok] [seteuid] [quiet] [stdout]
[log=file] [type=type] command [...]
pam_exec is a PAM module that can be used to run an external command.
The child's environment is set to the current PAM environment list, as
returned by pam_getenvlist(3) In addition, the following PAM items are
exported as environment variables: PAM_RHOST, PAM_RUSER, PAM_SERVICE,
PAM_TTY, PAM_USER and PAM_TYPE, which contains one of the module types:
account, auth, password, open_session and close_session.
Commands called by pam_exec need to be aware of that the user can have
controll over the environment.
Print debug information.
During authentication the calling command can read the password
The output of the command is appended to file
Only run the command if the module type matches the given type.
Per default the output of the executed command is written to
/dev/null. With this option, the stdout output of the executed
command is redirected to the calling application. It's in the
responsibility of this application what happens with the output.
The log option is ignored.
Per default pam_exec.so will echo the exit status of the external
command if it fails. Specifying this option will suppress the
Per default pam_exec.so will execute the external command with the
real user ID of the calling process. Specifying this option means
the command is run with the effective user ID.
MODULE TYPES PROVIDED
All module types (auth, account, password and session) are provided.
The external command was run successfully.
Add the following line to /etc/pam.d/passwd to rebuild the NIS database
after each local password change:
password optional pam_exec.so seteuid /usr/bin/make -C /var/yp
This will execute the command
make -C /var/yp
with effective user ID.
pam.conf(5), pam.d(5), pam(7)
pam_exec was written by Thorsten Kukuk <firstname.lastname@example.org> and Josh
Linux-PAM Manual 09/19/2013 PAM_EXEC(8)
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